Swim fin



FIG. 1 is a top perspective view of a swim fin showing my new design.

FIG. 2 is a top plan view thereof.

FIG. 3 is a bottom perspective view thereof.

FIG. 4 is a bottom plan view thereof.

FIG. 5 is a right side elevational view thereof.

FIG. 6 is a left side elevational thereof.

FIG. 7 is a front elevational view thereof; and,

FIG. 8 is a rear elevational view thereof. 

The ornamental design for a swim fin, as shown. 